diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index fda0589a6d..0514bc181b 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -4606,8 +4606,9 @@ bool DAGCombiner::isAlias(SDOperand Ptr1, int64_t Size1, if (CombinerGlobalAA) { // Use alias analysis information. - int Overlap1 = Size1 + SrcValueOffset1; - int Overlap2 = Size2 + SrcValueOffset2; + int64_t MinOffset = std::min(SrcValueOffset1, SrcValueOffset2); + int64_t Overlap1 = Size1 + SrcValueOffset1 - MinOffset; + int64_t Overlap2 = Size2 + SrcValueOffset2 - MinOffset; AliasAnalysis::AliasResult AAResult = AA.alias(SrcValue1, Overlap1, SrcValue2, Overlap2); if (AAResult == AliasAnalysis::NoAlias) |